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Facts checked October 7, 2026 on official sourcesHow we score
On this page · 6 sections
  1. 01Quick verdict
  2. 02At a glance
  3. 03Scores by criterion
  4. 04Pros & cons
  5. 05Alternatives
  6. 06Method & sources

At a glance

i-to-i TEFL and The TEFL Institute compared on 10 decision criteria
Criterioni-to-i TEFL logoi-to-i TEFLThe TEFL Institute logoThe TEFL Institute
Editorial scoreWeighted average of our five criteria9.1/10Higher score9.0/10
PriceAs published on the official site180-hour Level 5 TEFL: $189 on sale (full price $759); 300-hour Level 5 Diploma $289 (was $1,129); Level 6 Trinity CertPT $759 (was $2,399) plus £199 Trinity moderation feeLower starting price$365 sale price (regular $655) for the 180-hour Level 5 Diploma; the non-regulated 120-hour Advanced TEFL Course was $345 (regular $975)
Payment plansHow the cost can be spread0% interest installment plans on higher-priced courses (e.g. CertPT: $99 deposit plus 6 monthly payments of $110)Pay in full or in 2 interest-free payments, the second due after 30 days; 10% off with code FUNDING for students or people on unemployment benefit (proof may be requested)
FormatHow you studySelf-pacedSelf-paced
DurationTime to finish or access period17 weeks of study access for the 180-hour course; most people finish in 4 to 8 weeks180 guided learning hours (382 hours total qualification time on the Ofqual register), self-paced across ten Level 5 units; 6 months of study time included, with paid extensions up to 18 months of total access
AccreditationWhat employers or boards may checkOfqual-regulated (UK) Level 5 course, and DEAC-approved, per i-to-iHighfield Level 5 Diploma in TEFL (qualification 610/1571/4), regulated by Ofqual; The TEFL Institute is listed as an approved provider under DEAC's Approved Quality Curriculum (AQC) review; OTCAC accredited (per the site)
CertificateWhat you receive at the endOfqual-regulated Level 5 TEFL certificateHighfield Level 5 Diploma in TEFL (Pass/Fail), issued as a PDF certificate within 5–10 working days of passing; hard copies cost extra
Free trialWays to test before payingNot published3-day free trial with access to sample course modules.
Refund policyYour way out if it is not a fitNot publishedFull refund within 14 days of purchase minus a $35 administration fee, unless you have reached Module 3 or completed the course; no refund on flash-sale items under $35
Best forWho it suitsNew teachers with near-native English who want an Ofqual-regulated Level 5 TEFL for under $200 and can study on their own.aspiring English teachers who want an Ofqual-regulated Level 5 TEFL qualification online, with assessor-marked written work, for a few hundred dollars.

“Not published” means the provider did not state it or we could not confirm it. Program data checked October 5, 2026 (i-to-i TEFL) and October 7, 2026 (The TEFL Institute).

Scores by criterion

i-to-i TEFLThe TEFL Institute
Overalli-to-i TEFL +0.1
i-to-i TEFL9.1
The TEFL Institute9.0
Curriculum 25% of scoreTie
i-to-i TEFL8.9
The TEFL Institute8.9

i-to-i TEFL: Level 5 syllabus covering grammar, methodology, lesson planning and job guidance. · The TEFL Institute: 180 guided learning hours across ten Level 5 units, with assessor-marked open answers and 26 hours of live Zoom classes; no observed teaching practice in the online version.

Credibility 25% of scoreTie
i-to-i TEFL9.5
The TEFL Institute9.5

i-to-i TEFL: Ofqual-regulated and DEAC-approved, operating since 1994. · The TEFL Institute: Ofqual-regulated Highfield Level 5 Diploma verifiable on the Ofqual register, plus DEAC Approved Quality Curriculum provider listing.

Value 20% of scorei-to-i TEFL +0.6
i-to-i TEFL9.5
The TEFL Institute8.9

i-to-i TEFL: $189 sale price for a regulated 180-hour Level 5 certificate. · The TEFL Institute: $365 sale price for a regulated Level 5 diploma with two 60-hour awards included; resubmission and extension fees can add cost.

Flexibility 15% of scoreTie
i-to-i TEFL8.9
The TEFL Institute8.9

i-to-i TEFL: Online and self-paced, within a 17-week access window. · The TEFL Institute: Self-paced online within 6 months, with paid extensions and a two-payment option.

Support 15% of scoreThe TEFL Institute +0.5
i-to-i TEFL8.4
The TEFL Institute8.9

i-to-i TEFL: Access to DELTA-qualified tutors throughout the study period. · The TEFL Institute: Personal tutor, CELTA/DELTA-qualified mentors, live Zoom classes, 3-working-day marking and job coaching seminars.

Scores out of 10 from our published method; the overall score is the weighted average.

Pros & cons side by side

i-to-i TEFL logoi-to-i TEFL
✓What we like
  • Ofqual-regulated Level 5 qualification for $189 on our October 30, 2026 check
  • No final exam: written assignments and quizzes, marked with help from DELTA-qualified tutors
  • 17 weeks of access for a course most people finish in four to eight weeks
  • Jobs advice team and job board after you graduate
!Watch out for
  • No observed teaching practice in the course; the live Zoom session is a $54.95 add-on
  • The $759 "full price" and a countdown that had already expired make the discount hard to take seriously
  • Bundled extras (yoga and mindfulness courses) pad the offer without helping you teach
The TEFL Institute logoThe TEFL Institute
✓What we like
  • Highfield Level 5 Diploma on the Ofqual register (610/1571/4), at $365
  • Written answers marked by assessors and returned within 3 working days
  • 26 hours of free live Zoom classes and two 60-hour Level 5 Awards included
  • 3-day free trial of real course modules before you pay
  • Two interest-free payments if you can't pay at once
!Watch out for
  • No teaching practice in the online diploma; the hybrid version adds 10 hours of live practical training
  • A third submission of any assessment costs $35, and assessment fees are non-refundable
  • Missing a resubmission deadline without arranging an extension fails the course
  • Access ends for good at 18 months, extensions included, and your progress is deleted
  • On the two-payment plan, you can't pass Module 3 until the balance is paid
  • 14-day refund carries a $35 fee and ends once you reach Module 3

Alternatives to i-to-i TEFL and The TEFL Institute

Other TEFL certification options we reviewed, ranked by editorial score.

First-time English teachers who want a recognised 120-hour TEFL certificate with a personal tutor and six months to finish.

From $297

New English teachers aiming at jobs abroad or online who want a regulated Level 5 qualification at a low price and can study alone for a month or two.

Bridge
8.7/10
$379

First-time English teachers, including non-native speakers at B1 level or above, who want a recognized 120-hour certificate with a personal tutor and can finish in six to twelve weeks.

↪See all 10 TEFL certification programs ranked

Career guideHow to become an English teacher abroad: steps, costs and requirements

Method & sources

We score each program on curriculum, credibility, value, flexibility and support, using the provider’s official pages; see how we score. Prices and terms change: confirm them on the official site before you enroll.

We may earn a commission when you buy through links on this page. It never affects our rankings, which come from our published editorial criteria. Links marked as sponsored are affiliate links. Read our affiliate disclosure.

i-to-i TEFL logoSee prices on i-to-i TEFLThe TEFL Institute logoSee prices